Book-jacket design may become a lost art, like album-cover design, without which late-20th-century iconography would have been pauperized.

As music migrates into our iPods, CD collections require less and less room, residing in our heads rather than resounding off the walls. The protracted labor of amassing a personal music library has lost its detective zeal.

Used to be, conservatives revered the Average American, that Norman Rockwell oil painting of diner food, humble faith, honest toil, and Capraesque virtue.

Who elected Larry King America's grief counselor? We, the viewing public, did, by driving up his ratings whenever somebody famous passes.

The whole ecosystem of celebrity has broken down for writers. If you go back to the '50s, '60s, and '70s, writers were on TV a lot, and they were allowed to misbehave a lot. Truman Capote was a pop figure, but it wasn't until he went on David Susskind's show and had that extraordinary voice and manner that everyone could imitate, that he really took off as a figure. Norman Mailer and Vidal, the same thing. The bestselling writers now, there's no great animal energy with them.

What's happening to movie critics is no different from what has been meted out to book, dance, theater, and fine-arts reviewers and reporters in the cultural deforestation that has driven refugees into the diffuse clatter of the Internet and Twitter, where some adapt and thrive - such as Roger Ebert - while others disappear without a twinkle.

Like 'Twin Peaks,' '24,' 'Mad Men,' and 'The Sopranos' before it, 'Downton Abbey' enriches the iconography and collective lore of pop culture. It replenishes the stream.